Kinds of MCT Files

Primary MCT File Association

.MCT

Formatting:	.mct
Category:	Windows Live Messenger Data File

Windows Live Messenger Data File contains program specific data such as animated winks, scenes, sounds, backgrounds, and user tiles.

Company:	Microsoft Corporation
Division:	Data Files
Entry:	HKEY_CLASSES_ROOT\.mct

Software Programs That Open The Windows Live Messenger Data File:

7-Zip by Igor Pavlov

Windows

Android

Linux

Corel WinZip 21 by Corel

Windows

	Mac
	iOS

Android

Microsoft Windows Live Messenger by Microsoft Corporation

Windows

Mac

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MCT File Complications

Issues Opening MCT Files

7-Zip is Not Installed

When trying to open your MCT file, you get the error "Can't Open MCT File Type". Generally, this is experienced in %%os%% because 7-Zip isn't installed on your PC. The typical path of opening your MCT with a double-click won't work because %%os%% cannot make the program connection.

Tip: When another MCT application is installed, you can choose to open it by selecting "Show Apps" and using that program.

Wrong Version of 7-Zip is Installed

In some cases, you might have a newer (or older) version of a Windows Live Messenger Data File file that is unsupported by your installed application version. If you've got the wrong version of 7-Zip installed, you'll need to install the correct version. This problem is most common when you have an older version of the software application, and your file was created by a newer version that it cannot recognize.

Tip: Investigate your MCT file by right-clicking and selecting "Properties" to find clues on what version you need.

Conclusion: The majority of MCT file opening issues are due to not having the correct 7-Zip version installed.

Other Causes of MCT File Opening Problems

In the majority of cases, installing the right version of 7-Zip will resolve your issue. If you're still experiencing problems opening MCT files, there could be other computer problems. Problems unrelated to software:

• MCT file type Registry entries are wrong
• Deletion of the MCT file description from the Registry by mistake
• 7-Zip or another MCT application experienced a flawed installation
• MCT file corruption
• Malware-tainted MCT file can't be opened
• Device drivers for MCT-related hardware are out-of-date
• Insufficient system resources to successfully open Windows Live Messenger Data File files